[Math]

This week we introduce addition and the plus sign

本周我们学习了加法和加号。

You can practice through this game

你可以通过小游戏练习。

If you need more challenge, try this one!

如果你需要更多挑战，请试试

****Choose the Explorer to open the game （open it as a website)请选择浏览器为打开方式
(就像打开网页一样）******